1997 CHEVROLET ASTRO cooling

Downloaded from www.Manualslib.com manuals search engine NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The repair cost wouldn’t be covered by your
warranty. Too much water in the mix can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
I NOTICE:
If you use the proper coolant, you don’t have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
Checking Coolant
When your engine is cold, the coolant level should be at
ADD, or a little higher. When your engine is warm, the
level should be up
to FULL HOT, or a little higher.
6-27

Downloaded from www.Manualslib.com manuals search engine Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted the
same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new
GM original
equipment
parts. This way, you will be sure to have the
right wheel, wheel bolts and wheel nuts for your vehicle.
A CAUTIO, .:
-
Using the wrong replacement wheels, wheel bolts
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make you lose
control.
You could have a collision in which you or
others could be injured. Always use the correct
wheel,
wheel bolts and wheel nuts for replacement.
NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper
height, vehicle ground clearance and tire or tire
chain clearance to the body and chassis.
See “Changing a Flat Tire” in the Index for
more information.
Used Replacement Wheels
1
A CAU JON:
I
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or
how far it’s been driven. It could fail suddenly
and cause
an accident. If you have to replace a
wheel, use a new
GM original equipment wheel.
6-49

Downloaded from www.Manualslib.com manuals search engine Replacement Bulbs
Exterior Lamps Quantity Trade No.
Halogen Headlamps - 2 H6054
Sealed Beam
Halogen Headlamps
-
Composite
2 9006 (Low Beam)
Halogen Headlamps
-
Composite Parking, Turn
Signal Lamps
Rear, Stoplamps
Sidemarker Lamps
Back-up Lamps 2
2
2
4
2
9005 (High Beam)
3 157NA
2057
194
1156
Capacities and Specifications
All capacities are approximate. English and metric
conversions are given.
Please refer to “Recommended Fluids and Lubricants”
in the Index for more information.
Engine Specifications
Engine ............... “VORTEC” 4300 V6 SFI*
RPO ................................... L35
Firing Order ...................... 1-6-5-4-3-2
Horsepower
................... 190 at 4,400 rpm
Thermostat Specification
........... 195 “F (9 1 “C)
*Sequential Fuel Injection
Wheel Nut Torque
Base or Optional Wheel ....... 100 lb-ft (140 N-m)
Tire Pressures
......... See “Loading Your Vehicle”
in the Index.
Cooling System Capacity
Quantity”
without Rear Heater
13.5 quarts (12.8 L)
Quantity*
with Rear Heater
16.5 quarts (15.5 L)
After refill, the level
must be checked.
6-66

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
Short Trip/City Definition
Follow the Short TripKity Maintenance Schedule if any
one of these conditions is true for your vehicle:
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such as frequent
driving in stop-and-go traffic).
Most trips are through dusty areas.
You frequently tow a trailer or use a carrier on top of
If the vehicle is used for delivery service, police, taxi
One of the reasons ~OLI should,follow this schedule ifyou
operate your vehicle under any of these conditions is thnt
these conditions
cause engine oil to brenk down sooneK
your vehicle.
or other commercial application.
I
Short TripKity Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change (or
3 months, whichever occurs first). Chassis
Lubrication (or
3 months, whichever occurs first). Drive
Axle Service (or 3 months, whichever occurs first).
Short Trip/City Intervals -
Every 6,000 Miles (10 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection, if driving in dusty conditions. Front
Wheel Bearing Repack (2WD only) (or at each brake
relining, whichever occurs first). Automatic
Transmission Service (severe conditions
only).
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement.
Fuel Filter Replacement. Automatic
Transmission Service (normal conditions).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection. Fuel Tank, Cap and
Lines Inspection.
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
These intervnls only sunznznrize muintenance services.
Be sure to follow the comnplete rnainterzance schedule
on the followkg pages.
Every 100,000 Miles (166 000 km): Spark Plug Wire
7-5

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule
Follow this maintenance schedule only if none of
the conditions from the Short TripKity Maintenance
Schedule is true.
Do not use this schedule if the vehicle
is used for trailer towing, driven in a dusty area or used
off paved roads. Use the Short TripKity schedule for
these conditions.
Driving a vehicle with a fully warmed engine under
highway conditions causes engine oil to break
down slower:
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
I2 months, whichever occurs first).
Chassis Lubrication (or every
12 months, whichever
occurs first). Drive Axle Service. Tire Rotation.
Transmission Service (severe conditions
only).
Replacement. Air Cleaner Filter Replacement. Front
Wheel Bearing Repack
(2WD only) (or at each brake
relining, whichever occurs first). Automatic
Transmission Service (normal conditions).
Drive Belt Inspection. Fuel Tank, Cap and Lines Inspection.
Inspection. Spark Plug Replacement. Positive
Crankcase Ventilation (PCV) Valve Inspection.
Every 150,000 Miles (240 000 km): Cooling System
Service (or every
60 months, whichever occurs first).
These intervals only summarize rncrintenance services.
Be sure
to follow the complete maintenance schedule
on the following pages.
Every 15,000 Miles (25 000 km): Automatic
Every 30,000 Miles (50 000 km): Fuel Filter
Every 60,000 Miles (100 000 km): Engine Accessory
Every 100,000 Miles (166 000 km): Spark Plug Wire
7-6

Downloaded from www.Manualslib.com manuals search engine I Short Trip/City Maintenance Schedule I
100,000 Miles (166 000 km)
CI Inspect spark plug wires.
An Emission Control Service.
Replace spark plugs.
0 Inspect Positive Crankcase Ventilation
(Pcv) valve.
An Emission Control Service.
An Emission Control Service.
DATE
SERVICED BY: ACTUAL MILEAGE
150,000 Miles (240 000 km)
CI Drain, flush and refill cooling system
(or
every 60 months since last service,
whichever occurs first). See “Engine
Coolant” in the Index for what to use.
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test cooling
system and pressure cap.
An Emission Control Service.
DATE ACTUAL MILEAGE
I I
SERVICED BY: I
I
7-29

Downloaded from www.Manualslib.com manuals search engine 100,000 Miles (I66 000 km)
0 Inspect spark plug wires.
0 Replace spark plugs.
0 Inspect. Positive Crankcase Ventilation
(Pcv) valve. An Emission Control Sewice.
An Emission Control Service.
An Emission
Control Service.
.
DATE ACTUAL MILEAGE SERVICED BY:
-
150,000 Miles (240 000 km)
0 Drain, flush and refill cooling system
(or every
60 months since last service,
whichever occurs first). See “Engine
Coolant” in the Index for what
to use.
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test the
cooling system and pressure cap.
An Emission Control Service.
DATE
I
ACTUAL MILEAGE SERVICED BY

Downloaded from www.Manualslib.com manuals search engine Cooling System ................................ 5- I5
Courtesy Lamps ................................ 2-39
Courtesy Transportation
........................... 8-8
Cruise Control
................................. 2-34
Customer Assistance Information
................... 8- 1
Customer Satisfaction Procedure .................... 8-2
Customer Assistance for Text Telephone Users
......... 8-4
Damage. Finish
............................... 6-58
Damage. Sheet Metal
............................ 6-57
Daytime Running Lamps
......................... 2-38
Daytime Running Lamps Indicator Light
............ 2-68
Dead Battery
................................... 5-3
Defects. Reporting Safety
................... 8- IO. 8- 11
Defensive Driving ............................... 4-2
Defogger. Rear Window
.......................... 3-8
Defrosting
..................................... 3-6
Dimensions. Vehicle
............................ 6-68
Dome Lamps
.................................. 2-39
Door Locks
....................................... 2-6
Sliding ..................................... 2-10
Drive Position
................................. 2-21
Driver Position
................................. 1 - 18
Driving
City
........................................ 4-18
Defensive
.................................... 4-2
Drunken
..................................... 4-3
Freeway
.................................... 4-19
TnaBlizzard
................................. 4-26
In Foreign Countries ........................... 6-4
IntheRain
.................................. 4-16
Night
...................................... 4-14
OnCurves
................................... 4-9
On Grades While Towing
a Trailer ............... 4-37
On
Hill and Mountain Roads .................... 4-22
OnSnowandIce
............................. 4-24
Throughwater
............................... 4-18
WetRoads
.................................. 4-16
Winter
...................................... 4-24
With a Trailer ................................ 4-35
DrunkenDriving
................................ 4-3
Electrical Equipment. Adding
.......... 2- 18. 3-28. 6-60
Electrical System
............................... 6-60
Engine
........................................ 6-9
Coolant
..................................... 6-25
Coolant Heater
............................... 2-18
Coolant Level Check
.......................... 7-43
Cooling System Capacity
....................... 6-66
Cover
...................................... 6-15
Exhaust ..................................... 2-27
FuseBlock
.................................. 6-64
Identification
................................ 6-60
OilLevelCheck
.............................. 7-43
Overheating
................................. 5-13
Running While Parked
......................... 2-28
Specifications
................................ 6-66
Starting
..................................... 2-17
Temperature Gage
............................ 2-64
9-3